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J. Cent. South Univ. Technol. (2011) 18: 881-888 DOI: 10.1007/s11771-011-0777-4 Deterioration of concrete in railway tunnel suffering from sulfate attack LONG Guang-cheng(龙广成)1, XIE You-jun(谢友均)1... to aggressive sulfate medium in practice, detailed field investigations and tested analysis on sprayed concrete linings of approximately 40-year-old railway tunnels in environments containing sulfate ion were......
Effects of additives on nickel electrowinning from sulfate system LU Jing(卢 静), YANG Qi-hua(阳启华), ZHANG Zhao(张 昭) School of Chemical Engineering, Sichuan University, Chengdu 610065... and improve the surface morphology of cathode nickel, the influence of additives of boric acid and dodecyl sodium sulfate (SDS) on the process of nickel electrowinning from sulfate system was studied......
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Preparation of copper nanoparticles by chemical reduction method using potassium borohydride ZHANG Qiu-li(张秋利)1, YANG Zhi-mao(杨志懋)2, DING Bing-jun(丁秉钧)2, LAN Xin-zhe(兰新哲)1, GUO Ying-juan(郭莹娟)1... by chemical reduction method using potassium borohydride as reducing agent. The effects of reactant ratio, concentration of CuSO4, reaction temperature, and dispersant on the size of product and conversion......
Reduction of lead sulfate to lead sulfide with carbon monoxideZHENG Yong-xing(郑永兴), LIU Wei(刘维), QIN Wen-qing(覃文庆), JIAO Fen(焦芬), HAN Jun-wei(韩俊伟), YANG Kang(杨康), LUO Hong-lin(罗虹霖) (School... of the activation energy is 47.88 kJ/mol.Key words:lead sulfate; reduction; carbon monoxide; lead sulfide; pyrometallurgy......
Reduction leaching of rare earth from ion-adsorption type rare earths ore with ferrous sulfate肖燕飞1,2,3,冯宗玉1,2,黄莉1,2,3,黄小卫1,2,陈迎迎5,龙志奇1,21. National Engineering Research Center for Rare Earth... of Chemical Engineering,China University of Petroleum,Beijing摘 要:The practice of in-situ leaching of the ion-adsorption type rare earths ore with ammonium sulfate......
Reduction leaching of rare earth from ion-adsorption type rare earths ore with ferrous sulfate肖燕飞1,2,3,冯宗玉1,2,黄莉1,2,3,黄小卫1,2,陈迎迎5,龙志奇1,21. National Engineering Research Center for Rare Earth... of Chemical Engineering,China University of Petroleum,Beijing摘 要:The practice of in-situ leaching of the ion-adsorption type rare earths ore with ammonium sulfate......
J. Cent. South Univ. (2012) 19: 2340-2347 DOI: 10.1007/s11771-012-1280-2 Railway tunnel concrete lining damaged by formation of gypsum, thaumasite and sulfate crystallization products in southwest... and Springer-Verlag Berlin Heidelberg 2012 Abstract: The railway tunnel concrete lining exposed to sulfate-bearing groundwater beyond 40 years in southwest of China was investigated. Field investigation......
Reduction roasting–magnetic separation of vanadium tailings in presence of sodium sulfate and its mechanismsYu-Lei Sui1,Yu-Feng Guo1,Andrew Yakovlevich Travyanov2,Tao Jiang1,Feng Chen1,Guan-Zhou... id="ChDivSummary" name="ChDivSummary">Reduction roasting with sodium sulfate followed by magnetic separation was investigated to utilize vanadium tailings with total iron grade of 54.90 wt% and TiO2......
]. Beijing: China University of Geosciences(Beijing), 2013: 60-120. [34] MACHEL H G. Bacterial and thermochemical sulfate reduction in diagenetic settings-Old and new insights[J]. Sedimentary Geology, 2001..., Kansas, and Oklahoma, USA. In: Sediment-hosted Zn-Pb ores[M]. Berlin: Springer, 1994: 104-138. [38] THOMAS J, ANDERSON G M. The role of thermochemical sulfate reduction in the origin of Mississippi Valley......